Lathrop State Park Access provides entry to Colorado's first state park near Walsenburg, offering two lakes (Martin Lake and Horseshoe Lake) with boat ramps, a visitor center, and 103 campsites.

Martin Lake's southwest boat ramp and an ADA-accessible canoe/kayak launch on Horseshoe Reservoir's south side serve paddlers and boaters, while the park requires a daily vehicle pass ($10) or annual pass for entry. The visitor center (open 8 a. m. –4 p. m.

weekdays, 9 a. m. –3 p. m. weekends) sells passes, fishing licenses, and supplies; all motorized watercraft must be inspected for aquatic nuisance species before launching.